title: Large-area 3D chiral plasmonic structures.
abstract: We manufacture large-area plasmonic structures featuring 3-dimensional chirality by colloidal nanohole lithography. By varying the polar rotating speed of the samples during gold evaporation, we can fabricate spiral-type ramp nanostructures. The optical properties show chiroptical resonances in the 100 to 400 THz frequency region (750 to 3000 nm), with circular dichroism values of up to 13%. Our method offers a simple low-cost manufacturing method of cm(2)-sized chiral plasmonic templates for chiroptical applications such as stereochemical enantiomer sensors.
authors.affiliation: 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Bettina
authors.initials: B
authors.lastname: Frank
authors.forename: Xinghui
authors.initials: X
authors.lastname: Yin
authors.forename: Martin
authors.initials: M
authors.lastname: Schäferling
authors.forename: Jun
authors.initials: J
authors.lastname: Zhao
authors.forename: Sven M
authors.initials: SM
authors.lastname: Hein
authors.forename: Paul V
authors.initials: PV
authors.lastname: Braun
authors.forename: Harald
authors.initials: H
authors.lastname: Giessen
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D006046:Gold / Q000737:chemistry*; D008027:Light; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
chemical_list: D006046:Gold